[TenTec] Tuner stiff on Century 21

[Curron HILL]

Well my mint 21 has a stiff tuner.  Time to rebuild it I guess.  The question is, should I just send it in to TenTec and get a complete tune up, everything else is working FB, tuning seems spot on, or should I find someone to rebuild it that has experience in it, or finally should I attempt to do it my self?   Does anyone know what a rebuild and tuneup would cost?
 
73
KB3DRW  Don